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Related Concept Videos

Ventilatory Modes01:14

Ventilatory Modes

Mechanical ventilators are life-saving devices that support or replace spontaneous breathing. They deliver breaths to patients through varying methods known as ventilator modes. Understanding these modes is critical for healthcare providers managing patients with respiratory failure.
There are three ventilatory modes: full support, partial support, and spontaneous. These are described below.
Full Support Modes
Full support modes include controlled mechanical ventilation, continuous mandatory...
Mechanical Ventilation III: Noninvasive Ventilation01:23

Mechanical Ventilation III: Noninvasive Ventilation

Noninvasive positive-pressure ventilation (NIPPV), continuous positive airway pressure (CPAP), and bilevel positive airway pressure (BiPAP) are essential methods in respiratory care. These ventilation techniques offer unique benefits for patients with various respiratory conditions, providing adequate support without requiring intubation. Let's explore how each method is crucial in improving patient outcomes and enhancing respiratory therapy.
Noninvasive Positive-Pressure Ventilation (NIPPV)
Mechanical Ventilation II: Invasive Ventilation01:23

Mechanical Ventilation II: Invasive Ventilation

Ventilators are essential medical equipment used to aid patients with respiratory difficulties. Their primary function is to assist or replace spontaneous breathing by providing mechanical ventilation. There are two general classes of mechanical ventilators: negative-pressure and positive-pressure ventilators.
Negative-Pressure Ventilators
Negative-pressure ventilators create a vacuum around the chest or body to draw air into the lungs, simulating breathing. This method does not require an...
Cardiopulmonary Resuscitation II: ACLS Airway Management01:22

Cardiopulmonary Resuscitation II: ACLS Airway Management

Airway management is a key skill in emergency and critical care settings, as maintaining a clear airway is essential for adequate oxygenation and ventilation.Head Tilt-Chin Lift TechniqueThe head tilt-chin lift maneuver is an essential technique primarily used in patients without suspected cervical spine injuries. To perform this maneuver, one hand is placed on the patient’s forehead, and gentle pressure is applied backward to tilt the head. The fingertips of the other hand are positioned under...
Pulmonary Ventilation: Inhalation01:24

Pulmonary Ventilation: Inhalation

Pulmonary ventilation is a vital process that ensures the exchange of oxygen and carbon dioxide in the lungs. It refers to the movement of air into and out of the lungs, enabling the body to obtain oxygen and remove waste carbon dioxide. In this article, we will explore the intricacies of pulmonary ventilation, including its underlying principles, mechanisms, and the interplay of pressures within the respiratory system.
Boyle's law becomes particularly pertinent when examining respiratory...
Pulmonary Cycle: Exhalation01:17

Pulmonary Cycle: Exhalation

In terms of human respiration, the act of expelling air, known as exhalation (or expiration), operates on the principle of pressure gradients. During expiration, the pressure within the lungs exceeds that of the surrounding atmosphere. Under normal conditions, quiet breathing involves passive exhalation and is free of muscular contractions. This is because the exhalation process is driven by the natural elastic recoil of the lungs and chest wall, both of which have an inherent tendency to...

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Related Experiment Video

Updated: May 31, 2026

Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome (ARDS)
06:22

Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome (ARDS)

Published on: April 7, 2021

Airway pressure release ventilation: what do we know?

Ehab G Daoud1, Hany L Farag, Robert L Chatburn

  • 1Respiratory Institute, The Cleveland Clinic, Cleveland, OH, USA.

Respiratory Care
|July 19, 2011
PubMed
Summary
This summary is machine-generated.

Airway pressure release ventilation (APRV) offers potential benefits like improved oxygenation but carries risks. This review clarifies APRV settings and compares it with BiPAP for acute respiratory distress syndrome (ARDS) patients.

Related Experiment Videos

Last Updated: May 31, 2026

Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome (ARDS)
06:22

Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome (ARDS)

Published on: April 7, 2021

Area of Science:

  • Critical Care Medicine
  • Respiratory Therapy
  • Mechanical Ventilation

Background:

  • Airway pressure release ventilation (APRV) is a pressure-controlled ventilation mode with unrestricted spontaneous breathing, utilizing an open lung approach.
  • It is primarily employed as a rescue therapy for patients with acute respiratory distress syndrome (ARDS) experiencing refractory hypoxemia.
  • Despite purported benefits like alveolar recruitment and improved oxygenation, APRV presents challenges including potential volutrauma and increased work of breathing.

Purpose of the Study:

  • To review proposed methods for setting Airway pressure release ventilation (APRV) variables (P high, T high, P low, T low).
  • To summarize comparative studies of APRV and biphasic positive airway pressure (BIPAP).
  • To elucidate the potential benefits and pitfalls associated with APRV in clinical practice.

Main Methods:

  • Literature review of proposed Airway pressure release ventilation (APRV) setting methodologies.
  • Systematic summary of studies comparing APRV with biphasic positive airway pressure (BIPAP).
  • Analysis of reported advantages and disadvantages of APRV.

Main Results:

  • Confusion exists regarding APRV terminology and settings, necessitating clear guidelines.
  • Evidence for APRV improving mortality in ARDS is currently lacking, though ongoing research may provide further insights.
  • APRV demonstrates potential benefits in oxygenation and lung protection but requires careful management to mitigate risks like volutrauma.

Conclusions:

  • Physicians and respiratory therapists must understand APRV settings, rationales, and its distinction from other ventilation modes like BIPAP.
  • Further research is needed to establish definitive mortality benefits and optimal use of APRV.
  • Careful consideration of APRV's benefits and risks is crucial for managing difficult-to-oxygenate ARDS patients.